Manufacture of paper.



[N VEN TOR. MZ'ZZZLJ' ff. Jmfizz/Vz ATTORNEY.

APER.

W. H. SANBURN.

.ANUFACTURE OF P P 1 CATION FILED MAY WITNESSES:

w. H. SANBURN.

MANUFACTURE OF PAPER.

APPLICATION FILED MAY 5, l9l5.

Patented July 18, 1916.

3 SHEETSSHEET 2.

WITNESSES:

flua/ W. H. SANBURN.

MANUFACTURE OF PAPER.

APPLICATION FILED MAY 5. 1915.

1,191,912. Patented July 18, 1916.

3 SHEETSSHEET 3.

WITNESSES: IN VENTOR; W116i Maw 17. am

BY nn A TTOR NE Y.

WILLIS H. SANBimN, or SPRINGFIELD, MAssacHu Er'rS, ASSIGNOR 'ro STRA'IHMORE PAPERco'MrmY, or MITTINEAGUE, MASSACHUSETTS, A CORPORATION or MASSA- cnusmrs.

To all wit 0m it mag concern:

Be it known that I, WILLIS H. SANBURN, a citizen of the United States of America, and residentof Springfield, in the county of Hampden and State of Massachusetts, have invented certain new and useful Improvements in the Manufacture of Paper, of

which thefollowing is a full, clear, and exact description.

This invention relates to ways and means for producing a paper which possesses a characteristic appearance in that it has areas, lines or superficial portions in contrast with other areas, lines, orsuperficial portions thereof,-the production being one which has an extensive adaptability for use as cover papers and for other purposes, and for which considerable demand and ready acceptability in the trade has been shown.

In carrying out the invention for the production of paper having a surface made up of contrasting portions, a coloring matter or material to contrast with the sheet or web is applied to the surface of a moist pulp sheet or web, and such sheet or web, while moist, with the color thereon is subjected to pressure to cause the color to spread irregularly on the surface of the paper.

As the invention is perhaps the more extensively carried out, a sheet or web of paper, having relatively thick and thin areas or portions therein has coloring matter or equivalent material for affecting its aspect applied on the surface thereof, which material is then displaced from the high or prominent surface portions to places of occupancy in the depressions at the thinner portions of the web or sheet.

The invention is described in conjunction with the accompanying drawings and is defined in the claims.

In the drawings: Figure 1 is a sectional elevation showing a portion of the wet end of a Fourdrinier paper machine which comprises a means for the carrying out of the invention. Fig. 2 is a plan view of the same, on a somewhat reduced scale, while Fig. 3 is an elevation as seen looking forwardly beyond the plane indicated by line 3--3, Fig 1. Figs. 4, 5, 6, 7 and 8 are face and sectional views illustrating the paper produced by the exercise of this invention.

Figs. 9, 10, 11 and 12 are views illustrating modifications of devices and arrangements Specification of Letters Patent.

MANUFACTURE OF PAPER.

specifically different from those represented 1n Figs. 1, 2 and .3 but to be regarded as available for use within the purview of the invention. I

First referring to the drawing, Figs. 1, 2 and 3 representing the equipment of a Four- Patented July 18, 1916. Application filed May 5, 1915. Serial No. 26,177. L I

drinier paper machine in a manner which is regarded as most practical and desirable for the carrying out of the objects of this invention, A. represents a gauze screen or apron, generally termed the Wire,B and C the upper and lower couch rolls around the lower one of which the wire runs, and the upper one having the enveloping covering or jacket a of felt as usual. D represents the dandy roll. Forward of the dandy roll, between the latter and the upper couch roll, and in proximity to such roll is a tank E WhlCll is suitably supported above the top of the wire and which extends horizontally and transversely of the paper machine. Th1s tank is for receiving and containing at a uniform level therein the liquid coloring matter or equivalent material which is employedfor afiecting the aspect of the paper.

the desired height from a pipe I; which leads thereinto from a service tank F, to

which the color from a reservoir is furnished by way of pipe d automatically. controlled by ball cock e. G represents a. cylindrical brush ranging lengthwise of the color tank and tobe partially submerged therein, such brush being sustained on suitable supports or brackets and is positively driven at a desired rate of speed, f representing a pulley on its arbor and f a belt running therearound and which is understood as driven in any suitable manner, as, for instance, from any pulley-provided shaft of the paper machine. H represents a blade which is carried on a'bar -J which is arranged above and parallel with the axis of the brush and has end journals or trunnions come retarded or rearwardly deflect ed, and

thereafter on liberation from their engagement with the blade have forwardly'accelerated springing movements for acquiring a spraying effect of the color, brought around by the brush from the tank, onto the surface of the upper co-uch roll. One end journal of the oscillatory bar J on which the quired; and in order that'the blade-carrying bar when satisfactorily adjusted maybe so confined, one of the supporting brackets in which the adjacent'trunnion or journal of the bar has its supporting engagement is split with projecting ears i 21 in conjunction with which a constricting screw 2' is engaged.

The Fourdrinier machine is operable for the production of a running web of paper of unequal thickness, that is while the web is uniform as to its under surface which is against the wire, it has prominent interspersed upper surface portions with relatively intermediate depressions as represented, for instance, inthe sectional view, Fig. 5. A practical manner of adapting the F ourdrinier machine for the production of a web having relatively thick prominent,

and low and depressed portions is to employ a plain dandy roll and to render inactive the first suction box L which is to the rear of the dandy roll. The pulp having come along toward and near to the dandy roll is still in such liquid state that the web has been but very slightly or imperfectly formed, and especially by reason of the absence of suction action at the location of the first suction box L. Such pulpin coming against the rotative dandy roll becomes somewhat banked 'up at the rear thereof as in a manner indicated by w in Fig. 1. The free fibers of the stuff more or less in suspension in the water at the zone of the banking up or ripple w are not of uniform consistency in the semi-liquid or embryo web, but are, as appreciable in paper manfacture, more or less bunched with more watery portions of the incipient web between; and, therefore, in the passage of the paper making stock having the components thereof disposed as just stated, there will be more of a crushing action between the dandy roll and the wire at some places than at others; and the web thence proceeding forward of the dandy roll to and between the couch rolls is one having the surface inequalities to be taken advantage of in the carrying out of the present improved manufacture of paper. The colorsprayed onto the felt jacket of the couch roll is carried around by the latter and not only transferred onto the uneven upper surface of the web, but such portions of the color as tire on the prominent or high places of the web are, under the rolling couch rolls, displaced or squeegeed from such high places to places of occupancy within the already surfaced depressions or low places. The paper thus produced is not one of a predetermined design or set figure, but such may be as readily and easily produced, if desired, by proper equipment and adaptation of the paper machine therefor; that is, a dandy roll having a figure or design provided on the surface thereof may be employed instead of a dandy roll the working surface of'which is only composed by the wire gauze of uniform texture throughout; and when using a design impressing orwatermarking dandy roll the rear suction box L is preferably active, that is the suction pump is in effective connection therewith, as Well as the forward suction box L The web having the depressions corresponding topredetermined design or configuration of the dandy roll receives the color surfacing from the couch roll-in substantially the same manner as has been heretofore described, which color is bythe pair of couch rolls crowded off or displaced from the prominentto the depressed surface portions of the paper. Notwithstanding the fact that the web on which the color is superficially applied is moist and the web receives as much of the color on its prominent portions as on its depressed portions, or, practically, even more, the forcing of the color under pressure action between companion rolls of the machine for the entire disposition thereof within the depressions is so complete as not to change or modify the body color of the paper which in the finished product is visible at the thicker or high places.

Assuming with reference to Figs. 4 and 7 that the stock or stuff is such or so prepared as to produce a medium brown paper, and it is desired that the sameshall have a mottling or designof a highly contrasting darker brown: The color employed in the tank E will be of the darker brown color;

and 3 y represent the natural or body color ing darker than the body color of the paper is found as a facing for the thinner portions 'of the paper, the latter portions are of the greater translucency. The

pressure, action exerted" by and between the i color variations for contrasting effects in different papers to be produced hereunder may be carried to infinity, the foregoing example of apaper made with contrasting browns belng only one of innumerable effects possible to be obtained. While, as has been scribed which while inactive to alter the facing of the paper at its high surface portions is eflective by chemical action on the portions of the paper comprised in the depressions thereof to alter the body color to a color, tint or shade difierent from-its normal color (or absence of color). While a F our- 'drinier machine would be more generally and extensively employed for the making of the moist pulp web, such web may be, of course, as well produced in a paper machine of other type, as, for instance, a cylinder machine; or it may be otherwise produced and supplied. Inasmuch as this in- ,vention contemplates in part the provision in any way of a paper sheet or web having relatively prominent and depressed portions, and means for displacing applied material from the prominent surface portions to and onto the depressed portions for acquiring the characteristic appearance of and forv the paper as described, the invention is not necessarily limited to any particular manner of producing the web having inequalities of thickness,as has already been intimated, nor is it limited in its broader aspect, to

i any particular mode of applying the liquid coloring, etc., on the surface of a moist pulp web preparatory to the pressure of the Web and color thereon while moist to cause, irregularly, the spreading of the color, nor to the manner of, or means for, effecting the color spreading pressure,it being understood, primarily, that a paper having surface portions of contrasting color, shade or tint, is produced .by providing in addition to the means for advancing a moist web, means for applying liquid coloring matter on the surface of such web, together with pressure means for causing the spreading of the color on the surface of the web, irrespective of the specific form and arrangement of the instrumentalities employed.

Referring to Fig. 9, the color is shown as being delivered from a jet or spray pipe m onto a roll a which acts as an equalizing roll and as a rollfor transferring it onto the couch roll B. In Fig. 10, the couch roll is shown as running against an open front of the tank E the periphery of the roll forming the tank boundary. Here the color is taken by the roll to and for application on the uneven surfaced web. K

In Fig. 11, the spraying by the cooperative rotative brush, partly submerged in the color tank and blade'I-I instead of being onto a couch roll or'other roll is sprayed directly onto the running web; and in Fig. I2 the spraying directly onto the running web is indicated as being by means of a jet pipe. The application of the color on the surface of the moist pulp web or sheet instead of being performed at the rear of the couch rolls may be forward of the couch rolls and in relation to a set of the press rolls, one of which will receive and transfer the color onto the paper while a pair of such rolls will be effective for imparting the pressure.

1. The combination with a Fourdrinier machine comprising a dandy roll, and the couch rolls, and operable for the production of a web of paper having prominent and depressed portions at and within the upper surface thereof, of a tank for containing a liquid color, arranged alongside and adjacent the upper couch roll and having a rotatively driven cylindrical brush, a portion of which is submerged in the liquid color in the tank, and a blade having an impingement against the bristles of the brush, whereby under the revoluble movement of the latter in conjunction with such blade the liquid color is sprayed onto the surface of the upper couch roll. v

2. The combination in a paper machine adapted and operable for the production of a web of paper having prominent and depressed portions at and within one side thereof, of a roll in conjunction with which the uneven surface of the web runs, a tank for containing liquid color arranged adjacent said roll' and having a cylindrical rotatively driven brush to be partially submerged in the tank, a blade adjacent an unsubmerged portion of the brush and adapted to have an impingement against the bristles of the brush whereby, under the revoluble movement of the latter in conjunction with such blade, the color taken up by the brush is sprayed upon the surface of the adjacent roll, and further means for imparting a rolling pressure to the paper.

3. The combination in a paper machine, which is adapted and operable for the production of a web of paper having prominent and depressed portions at and within one side thereof, of a roll in conjunction with which the uneven surface of the web runs,

a tank for containing liquid color adjacent said roll and having a r otatively driven cylindrical brush partially submerged therein, a blade adjacent the brush and adapted to impinge against the bristles of the latter and operable to cause a spraying of the brushcarried liquid onto the surface of the adjacent roll, means for adjusting the blade whereby the degree of its-impingement in relation to the brush may be varied, and

further means for imparting rolling pressure to the paper.

4. The combination in a paper machine, which is adapted and operable for the production of a web of paper having prominent and depressed portions at and within one side thereof, of ajroll in conjunction with which the uneven surface of the Web runs, a tank for containing liquid color adjacent said roll and having a rotativ ely' driven cylindrical brush partially submerged therein, a blade adjacent the brush and adapted to impinge against the bristles of the latter and operable to cause a spraying of the brush-carried liquid onto the surface of the 20 adjacent roll, a rocking-support on which the blade is mounted, means for confining said support against rocking movement, and further means for imparting a rolling pressure to the paper.

Signed by me at Springfield, Mass, in presence of two subscribing witnesses.

WILLIS H. SANBURN.

Witnesses: I

G. R. DRISCOLL, WM. S. BELLOWS. 

